IMHO it is very possible~ From what I have gathered you would be best off with an Essence electronics package ( 2pups>pan>filter/Q>vol).... Any Alembic circuit more complex than that, and you are dealing with two separate preamps / buffers and the headache of incorporating the TRS loop into some sort of summing matrix.... I dont know if they've done that before....

Check out "Mike's Flame Maple Custom" in the FTC folder~ it doesnt show the finished bass, but those are Fatboy pups, Essence electronics, and a TRS loop.